taccess.c - plan9port - [fork] Plan 9 from user space
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       ---
       taccess.c (523B)
       ---
            1 #include <u.h>
            2 #include <libc.h>
            3 #include <fcall.h>
            4 #include <9pclient.h>
            5 #include "fsimpl.h"
            6 
            7 int
            8 fsaccess(CFsys *fsys, char *name, int mode)
            9 {
           10         CFid *fid;
           11         Dir *db;
           12         static char omode[] = {
           13                 0,
           14                 OEXEC,
           15                 OWRITE,
           16                 ORDWR,
           17                 OREAD,
           18                 OEXEC,        /* only approximate */
           19                 ORDWR,
           20                 ORDWR        /* only approximate */
           21         };
           22 
           23         if(mode == AEXIST){
           24                 db = fsdirstat(fsys, name);
           25                 free(db);
           26                 if(db != nil)
           27                         return 0;
           28                 return -1;
           29         }
           30         fid = fsopen(fsys, name, omode[mode&7]);
           31         if(fid != nil){
           32                 fsclose(fid);
           33                 return 0;
           34         }
           35         return -1;
           36 }